package com.dycong.common.IO.calculator.netty;

import io.netty.bootstrap.Bootstrap;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;

public class Client implements Runnable {

    static ClientHandler client = new ClientHandler();

    public static void main(String[] args) throws Exception {

        for (int i = 0; i < 2500; i++) {//todo 可以启多少个client与Server的 .option(ChannelOption.SO_BACKLOG, 4096)息息相关
            new Thread(new Client()).start();
//		@SuppressWarnings("resource")
//		Scanner scanner = new Scanner(System.in);
//		while(client.sendMsg(scanner.nextLine()));
        }
    }

    @Override
    public void run() {
        String host = "127.0.0.1";
        int port = 9090;
        EventLoopGroup workerGroup = new NioEventLoopGroup();
        try {
            Bootstrap b = new Bootstrap();
            b.group(workerGroup);
            b.channel(NioSocketChannel.class);
            b.option(ChannelOption.SO_KEEPALIVE, true);
            b.handler(new ChannelInitializer<SocketChannel>() {
                @Override
                public void initChannel(SocketChannel ch) throws Exception {
                    ch.pipeline().addLast(new ClientHandler());
                }
            });
            ChannelFuture f = b.connect(host, port).sync();


            byte[] req = "hello world".getBytes();
            ByteBuf m = Unpooled.buffer(req.length);
            m.writeBytes(req);
            f.channel().writeAndFlush(m);

            f.channel().closeFuture().sync();
        } catch (InterruptedException e) {
            e.printStackTrace();
        } finally {
            workerGroup.shutdownGracefully();
        }
    }
}